The paper contains a description of symmetric convolution of the algebra of block-symmetric analytic functions of bounded type on $\ell_{1}$-sum of the space $\mathbb{C}^{2}.$ We show that the specrum of such algebra does not coincide of point evaluation functionals and described characters of the algebra as functions of exponential type with plane zeros.У статті описано симетричну згортку характерів алгебри блочно-симетричних аналітичних функцій обмеженого типу на $\ell_{1}$-сумі простору $\mathbb{C}^{2}.$ Авторами показано, що спектр такої алгебри не не збігається з множиною класів еквівалентності функціоналів значенні в точках, описано характери такої алгебри, як функції експоненціального типу з "плоскими'' нулями
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By means of two summation theorems of R. W. Gosper for a terminating ₅F₄ hypergeometric series of a...
We found the optimal information and the optimal method of its use to recover the convolution of n-f...
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